creates a custom origin for cloudfront. EASY CDN!

create_custom_origin.py

import boto
# requires cf_customorigin branch
# https://github.com/boto/boto/tree/cf_customorigin

origin_domain = 'www.example.org'
cdn_cname = ['media.example.org']
caller_reference = 'exmaple Distribution'

c = boto.connect_cloudfront()
d = c.create_custom_distribution( 
        dns_name=origin_domain,
        enabled=True,
        caller_reference=caller_reference,
        cnames=cdn_cname
        )
print 'cname '+ cdn_cname + ' to ' d.domain_name

invalidate_cf_cdn.py

import datetime
from boto.cloudfront import CloudFrontConnection
import os
import sys

rootdir = '/path/to/static/assets/'

media_list = []
for root, subFolders, files in os.walk(rootdir):
  root = root.replace('../app','')
  for f in files:
    media_list.append(root + '/'+ f)
    media_list.append(root.replace('static/','') + f)

#any media that didn't make it (look in app.yaml)
default_media_list = [
    '/favicon.ico',
    '/robots.txt',
    '/',
    ]

clear_list = media_list + default_media_list

aws_cloudfront_distributions = ['EXXXXXXXXXXXXXXX1','EXXXXXXXXXXXXXXX2']

print "About to clear " + str(len(clear_list)) + " items from cloudfront"
conn = CloudFrontConnection()
for cf_distro in aws_cloudfront_distributions:
  try:
    result = conn.create_invalidation_request(cf_distro, clear_list)
    print "Cleared " +str(len(result)) + " items successfully from " + cf_distro
  except:
    print "error occurred. please try again in 15 minutes"